Schedule of Amortizable Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Apr. 05, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 523,052	$ 523,052
Accumulated Amortization	346,260	332,452
Net Carrying Amount	176,792	190,600
Weighted Average Useful Life, years	6 years 9 months 18 days	6 years 9 months 18 days
Developed technology
Finite-Lived Intangible Assets
Gross Carrying Amount	345,513	345,513
Accumulated Amortization	233,749	224,059
Net Carrying Amount	111,764	121,454
Weighted Average Useful Life, years	6 years 2 months 12 days	6 years 2 months 12 days
Customer Relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	146,635	146,635
Accumulated Amortization	97,192	93,998
Net Carrying Amount	49,443	52,637
Weighted Average Useful Life, years	7 years 8 months 12 days	7 years 8 months 12 days
Tradenames and trademarks
Finite-Lived Intangible Assets
Gross Carrying Amount	30,414	30,414
Accumulated Amortization	15,109	14,205
Net Carrying Amount	15,305	16,209
Weighted Average Useful Life, years	9 years	9 years
Non-compete agreement
Finite-Lived Intangible Assets
Gross Carrying Amount	320	320
Accumulated Amortization	40	20
Net Carrying Amount	280	300
Weighted Average Useful Life, years	4 years	4 years
Customer order backlog
Finite-Lived Intangible Assets
Gross Carrying Amount	170	170
Accumulated Amortization	$ 170	$ 170
Weighted Average Useful Life, years	3 months 18 days	3 months 18 days

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274

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